Category E. Retail/Wholesale Dealer. Store, sell, transport and distribute LP-gas and perform all other categories of licensed activities except the manufacture, fabrication, assembly, repair, subframing, and testing of LP-gas containers and the sale and installation of LP-gas motor or mobile fuel systems rated at more than 25 horsepower.

Category F. Cylinder Filling. Operate a cylinder-filling facility, including cylinder filling, the sale of LP-gas in cylinders, and the replacement of cylinder valves.

Category I. Service Station and Cylinder Filling. Operate any service station and cylinder activity set out in Category F and G.

Category J. Service Station and Cylinder Facility. Sell, transport, install and connect LP-gas in cylinders; operate a cylinder filling facility, including cylinder filling and, the replacement of cylinder valves; operate an LP-gas service station as set out in Category G.

Category N. Manufactured Housing Installers and Repairmen. Service and install containers that supply fuel to manufactured housing; install, repair and service appliances and piping systems for manufactured housing.

Category P. Portable Cylinder Exchange. Operate a portable cylinder exchange service, where LP-gas is sold in portable cylinders whose LP-gas capacity does not exceed 21 pounds, where the portable cylinders are not filled on-site, and where no other LP-gas activity requiring a license is conducted. See LP-Gas Safety Rules §9.17, Designation and Responsibilities of Company Representatives and Operational Supervisors, for options for Category P licensees.